← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 875 · 40 questions
TalentJR

The method (LCM, then take away): Find the LCM of the two bottom numbers. Change each fraction to that bottom number. Subtract the tops, keep the bottom, and simplify.

NameDateTime takenScore ___ / 40
  1. 1.4/7 − 1/4 =
  2. 2.5/9 − 1/2 =
  3. 3.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  4. 4.5/7 − 1/2 =
  5. 5.9/10 − 3/5 =
  6. 6.A tank is 2/3 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  7. 7.3/4 − 3/7 =
  8. 8.A bottle has 9/10 litre of juice. Sara drinks 2/5 litre. How much juice is left (in litres)? =
  9. 9.1/2 − 3/10 =
  10. 10.Anaya has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  11. 11.3/4 − 2/5 =
  12. 12.2/3 − 3/7 =
  13. 13.2/3 − 1/6 =
  14. 14.A bottle has 3/4 litre of juice. Meera drinks 5/8 litre. How much juice is left (in litres)? =
  15. 15.Anaya has a ribbon 2/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  16. 16.1/2 − 2/7 =
  17. 17.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  18. 18.4/9 − 1/6 =
  19. 19.6/7 − 1/2 =
  20. 20.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  21. 21.5/6 − 1/5 =
  22. 22.7/10 − 1/2 =
  23. 23.7/9 − 1/3 =
  24. 24.A bottle has 5/8 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.7/8 − 2/3 =
  26. 26.A bottle has 3/5 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  27. 27.5/8 − 1/4 =
  28. 28.8/9 − 2/3 =
  29. 29.A bottle has 2/3 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  30. 30.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  31. 31.A tank is 2/3 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  32. 32.7/9 − 2/3 =
  33. 33.A tank is 3/4 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  34. 34.A bottle has 2/5 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  35. 35.7/10 − 3/5 =
  36. 36.A bottle has 1/6 litre of juice. Aarav drinks 1/8 litre. How much juice is left (in litres)? =
  37. 37.5/6 − 5/9 =
  38. 38.A tank is 3/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  39. 39.2/7 − 1/4 =
  40. 40.7/8 − 3/4 =

Answer key

  1. 9/28
  2. 1/18
  3. 1/28
  4. 3/14
  5. 3/10
  6. 1/6
  7. 9/28
  8. 1/2
  9. 1/5
  10. 11/21
  11. 7/20
  12. 5/21
  13. 1/2
  14. 1/8
  15. 1/15
  16. 3/14
  17. 13/28
  18. 5/18
  19. 5/14
  20. 1/9
  21. 19/30
  22. 1/5
  23. 4/9
  24. 1/8
  25. 5/24
  26. 3/10
  27. 3/8
  28. 2/9
  29. 11/30
  30. 1/10
  31. 5/21
  32. 1/9
  33. 9/28
  34. 1/15
  35. 1/10
  36. 1/24
  37. 5/18
  38. 1/10
  39. 1/28
  40. 1/8

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids